To all whom it



@einer gisten stwt @Hirn L c. WING, oF CONCORD, MASSACHUSETTS, lAND yA. e. BRADEEN, oF WATERBoRo, MAINE.

Letters Patent No. 61,497, dated Tannerie/22,1867'.`

Imreovnn WINDOW rAsTBNIzB.

@Ligt dgehule ref erreh tu in their etter ntent nuimkug part nf ige sums.

'ro ALI. WHOM IrMAY ooNoEnN:

Beit known that We, L. C. WING, of Concord, inthe county of Middlesex, and State of Massachusetts, and A. R. BRADEEN, of Waterboro, in the county of York, and State ofv Maine, have invented a new and useful improvement in Window-BlindFastener; and we do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being-hadA to the accompanyinigr drawing, forming a part of this speciication, in Which- `Figure 1 is a top or planview of 'our improved window-blind fastener.' partly in section through lthe line wz, g. 2. n I

Figure 2 is a detail sectional view of the same taken through the line yy, fig. A1.

Figure 3' is a detail sectional View of the same taken through the line zz, tig. 1.

Similar letters of reference indicate like parts'.

Our invention has for its object to furnish an improved means by which window blinds may be held'and locked, both when closed and when opened to any desired angle. And it consists of -an improved window-blind `i`astener, formed vby the combination `of a short arm by which it is -attached to the blind, a pivoted plate by which it is attached to the window-sill, two short connecting-rods and aspring-bolt, witheach other, as herein- Yafter more fully described.

A is a short arm, one \end of which is securely attached to the blind, about lthree inches from the hinge.

This attachment may be made by securing the end of the arm Ato a plate, a', andscrewing `the said plate fast to. thc blind, or in any other secure, convenient, and substantial manner. The: free end of the' arm A is bent up and has a pivoting-pin formed upon or attached to it, to which the end of the bar or rod Bis pivoteil, as shown in figs. 1 and 3. The other end of the bar or rod B is pivoted to the end of the rod or bar C, the other end ,of lwhich is pivoted to the plate D, as shown in iig-s. 1 and 2. The plate D is securely attached to the' sill or casing of the window, and is perforated with a number of holes, d', for the reception of the springbolt E. The holes d are arraugedfin the arc of a circle, having its centre, at the point at which the end of the,V

bar C is pivoted to the plate D, so that to whatever position'v the bar C may be moved, the bolt E will'always enter oueor the other of said holes-d', aud hold the blind securely locked. c .isa projection formedupon or securely attached to the bar or rod C. This projection s'perfrated for the .passage of the bolt E, and its interior vis ehambered for the reception of the spring G. Upon the bolt E is 'formed a ringor flange, el, upon whichrests the lower end of the coiled spring G; the upper 'end of which presses against the shoulder formed by the upper end of the chamberof the projection fc. ez is a pin, projecting from the side of the upper part of the bolt E, as shown in figs. 1 and 2. When the lower end of the`bolt E entersonleof the-holes in the plate ID, the pin e2 enters a notch formed in one side of the upper end of lthe projection c; To unfasten or unlock the blind, the bolt E is raised, compressing the spring G, and lifting the pin out of the said notch in the upper part of the projection le. Then by turning the 'bolt E slightly in either direction, the said pin e2 will rest upon the yend of said projectioman'd hold the said bolt away from, the plate-Qyallowing therblind to be moved freely into'any. desired position. f

.Having thus described our invention, Awe claim as new, `and desire to secure by Letters Patent- Y An improved window-blind fastener formed by the combination of the -arm A, bars B' and C, perforated plate D, and spring-bolt with each other, substantially asherein shownl and described and for the purpose set forth. The above specification of ourv invention signed by u's this 18th day of September, 186.6.

' I.. e. WING,

A. R2 BRADEEN.

Witnesses; I L

WM. 'F. McNAMARA, JAMES T. GRAHAM. 

